Protective mask adapter of safety helmet

Abstract

The utility model relates to the technical field of protective equipment, in particular to an adapter for a protective mask of a safety helmet, which is characterized in that a connecting bracket is connected with an upper slot of a helmet body through an upper buckle, and a sliding bracket is slidably connected with an upper guide slot of the connecting bracket through an upper clamping seat; the rotating arm comprises a first pivoting end and a second pivoting end at two length ends, the sliding support rotates relative to the first pivoting end through a rotating adjusting disc on the sliding support, the second pivoting end rotates relative to the angle adjusting disc, and the angle adjusting disc rotates synchronously with the mask through a second locking assembly. The mask can be adjusted back and forth according to head sizes and wearing habits of different persons through the sliding support, and the wearing comfort is improved; the mask can be turned over to the top of the cap body through the first pivoting end, so that a worker can conveniently turn over and fold the mask when the mask is not needed, and the operation flexibility is improved; the design of the second pivot end realizes the angle adjustment of the mask, meets the requirements of different operation scenes on the wearing angle of the mask, and improves the protection effect of the mask.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of protective equipment, especially to a safety helmet protective mask adapter. BACKGROUND

[0002] The ordinary protective masks on the market, such as helmet masks and electric welding caps, usually adopt a design of fixed connection between the cap body and the headband, which ensures stable wearing of the mask but also brings many limitations and inconvenience. In situations where safety helmets and masks need to be worn simultaneously, such as construction, power operation, fire rescue and other high-risk operating environments, workers cannot obtain comprehensive head and face protection.

[0003] Specifically, the safety helmet is an important equipment for head protection, used to protect the head from falling objects, collisions and other injuries; and the mask is mainly used to protect the face from splashing, harmful light (such as electric welding arc light), dust and other hazards. However, due to the lack of adaptation mechanism between the traditional mask and the safety helmet, workers often cannot conveniently install and use the mask while wearing the safety helmet, thereby increasing the safety risk in the operating process.

[0004] In addition, the existing mask has relatively single use function and lacks flexibility and adjustability. Different operating scenarios may have different requirements for the wearing angle and position of the mask, but the traditional mask often cannot be accurately adjusted according to the actual needs due to design limitations. This not only affects the protective effect of the mask, but also reduces the use experience and operating efficiency of the workers.

[0005] The information disclosed in this BACKGROUND section is only for the purpose of enhancing the understanding of the general background of the disclosure and should not be taken as admitting or implying that the information forms the prior art that is known to those skilled in the art. SUMMARY

[0006] The purpose of the utility model is to provide a safety helmet protective mask adapter to solve the defects in the prior art.

[0007] In order to achieve the above purpose, the utility model adopts the technical scheme of:

[0008] A safety helmet protective mask adapter is arranged between the mask and the cap body, comprising a connecting bracket and a sliding bracket arranged thereon, the sliding bracket is connected with the mask through a rotating arm, and the connecting bracket is connected with the cap body;

[0009] The connecting bracket is connected with the cap body through the insertion buckle thereon, a guide groove is arranged on the connecting bracket, the sliding bracket is slidably connected with the guide groove through the clamping seat thereon, and a locking assembly is arranged on the clamping seat corresponding to the guide groove;

[0010] The rotating arm comprises a first pivot end and a second pivot end located at both sides of the length of the rotating arm, a rotating adjusting disc is arranged on the sliding support corresponding to the first pivot end, the second pivot end rotates with the angle adjusting disc, the first pivot end rotates with the rotating adjusting disc and is pressed and fixed by a first locking assembly, and the second pivot end is pressed and fixed with the angle adjusting disc by a second locking assembly.

[0011] Further, the first locking assembly comprises a first knob and a first nut which are screwed with each other, the first knob and the first nut press and limit the first pivot end and the rotating adjusting disc from both sides respectively, and a gasket is arranged between the first nut and the rotating adjusting disc;

[0012] The second locking assembly comprises a second knob and a second nut which are screwed with each other, the second knob and the second nut press and limit the second pivot end and the angle adjusting disc from both sides respectively.

[0013] Further, a first threaded rod is arranged on the first knob, and a first threaded sleeve is arranged on the first nut, the first threaded rod is screwed with the first threaded sleeve;

[0014] A second threaded rod is arranged on the second knob, and a second threaded sleeve is arranged on the second nut, the second threaded rod is screwed with the second threaded sleeve.

[0015] Further, the first pivot end and the rotating adjusting disc are sleeved on the first threaded sleeve, and the second pivot end and the angle adjusting disc are sleeved on the second threaded sleeve;

[0016] The rotating adjusting disc is rotationally connected with the first threaded sleeve, the first pivot end rotates synchronously with the first threaded sleeve, the second pivot end is rotationally connected with the second threaded sleeve, and the angle adjusting disc rotates synchronously with the second threaded sleeve;

[0017] A limiting hole is formed on the mask corresponding to the second threaded sleeve, a clamping opening is formed on the edge of the limiting hole, and a protruding block is arranged on the second nut corresponding to the clamping opening.

[0018] Further, a limiting slot and a first corrugated tooth are arranged on the rotating adjusting disc along the circumferential direction respectively, and a guide rod and a second corrugated tooth are arranged on the first pivot end corresponding to the limiting slot and the first corrugated tooth respectively;

[0019] The guide rod is inserted into the limiting slot and is in sliding connection with the limiting slot, and the first corrugated tooth and the second corrugated tooth abut against each other and can slide relative to each other.

[0020] Further, a protruding part is arranged in the limiting groove near one end of the length of the limiting groove, and the protruding part cooperates with the end of the limiting groove to form a locking groove, and the guide rod can be clamped with the locking groove.

[0021] Further, the limiting groove and the first corrugated tooth are oppositely arranged in two semicircular arc regions of the rotating adjusting disc.

[0022] Further, a scale plate is arranged at the circumferential edge of the angle adjusting disc, a positioning click is arranged at the circumferential edge of the angle adjusting disc corresponding to the scale plate, an adjusting click is arranged at the second pivot end corresponding to the positioning click, and the adjusting click is clamped with the positioning click.

[0023] Further, a clamping block is arranged on the inner wall of the through hole of the angle adjusting disc, and a clamping groove is arranged on the outer wall of the second threaded sleeve along the axial direction of the second threaded sleeve, and the angle adjusting disc is slidably connected with the clamping groove through the clamping block.

[0024] Further, the locking assembly comprises a lock and a spring, a plurality of positioning grooves are arranged in the guide groove along the length direction of the guide groove, and a positioning block is arranged on the lock corresponding to the positioning grooves.

[0025] The spring is arranged between the clamping seat and the lock, and drives the positioning block to be clamped with the positioning groove, and a pressing part is arranged on the lock corresponding to the spring.

[0026] The utility model discloses the beneficial effects are:

[0027] In the application, the sliding support allows the face guard to be adjusted forward and backward according to the head size and wearing habit of different personnel, thereby improving the wearing comfort; the first pivot end allows the face guard to be turned over to the top of the cap body, thereby facilitating the worker to quickly fold the face guard when the face guard is not needed, and improving the flexibility of operation; and the design of the second pivot end realizes the angle adjustment of the face guard, meets the demand of different operation scenes on the wearing angle of the face guard, and improves the protection effect of the face guard. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments in the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0029] Figure 1 It is a schematic diagram of the connection between the safety helmet and the protective face guard in the utility model;

[0030] Figure 2The utility model discloses a safety helmet and protective mask dismounting schematic view for the utility model;

[0031] Figure 3 The utility model discloses a safety helmet protective mask adapter structure schematic view for the utility model;

[0032] Figure 4 The utility model discloses a safety helmet protective mask adapter explosion schematic view for the utility model;

[0033] Figure 5 The utility model discloses a safety helmet protective mask adapter explosion schematic view for the utility model;

[0034] Figure 6 The utility model discloses a second nut structure schematic view for the utility model;

[0035] Figure 7 For Figure 2 The utility model discloses a part structure amplification drawing for A place in the utility model;

[0036] Figure 8 The utility model discloses a connecting support structure schematic view for the utility model;

[0037] Figure 9 The utility model discloses a connecting support upper positioning groove structure schematic view for the utility model;

[0038] Figure 10 The utility model discloses an adapter and cap body connection schematic view for the utility model;

[0039] Figure 11 The utility model discloses a mask relative cap body overturning schematic view.

[0040] Fig. 1, connecting support 11, plug buckle 12, guide slot 121, positioning groove 2, sliding support 21, clamping seat 22, locking assembly 221, lock catch 221a, pressing part 221b, positioning block 222, spring 3, rotating adjusting disc 31, limiting groove 311, protruding part 312, locking groove 32, first corrugated tooth 4, rotating arm 41, first pivot end 411, guide rod 412, second corrugated tooth 42, second pivot end 421, adjusting clamping tooth 5, angle adjusting disc 51, scale plate 52, positioning clamping tooth 53, through -hole 531, clamping block 6, first locking assembly 61, first knob 611, first threaded rod 62, first nut 621, first threaded sleeve 63, gasket 7, second locking assembly 71, second knob 711, second threaded rod 72, second nut 721, second threaded sleeve 722, protruding block 723, clamping groove 8, cap body 81, insertion slot 9, mask 91, limiting hole 911, bayonet. DETAILED DESCRIPTION

[0041] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments.

[0042] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it should be understood that when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0044] The present application is aimed at the design limitation and single function of the existing protective mask, which makes it difficult for workers to obtain comprehensive head and face protection in the case of needing to wear a safety helmet and a mask at the same time, and also affects the protection effect and use experience of the mask. A safety helmet protective mask adapter is provided, as shown in Figures 1 to 11 The connecting bracket 1 is connected to the hat body 8 through the plug-in buckle 11 thereon and the plug-in groove 81 on the hat body 8, the connecting bracket 1 is provided with a guide groove 12, the sliding bracket 2 is slidably connected to the guide groove 12 through the clamping seat 21 thereon, and the clamping seat 21 is provided with a locking assembly 22 corresponding to the guide groove 12, the rotating arm 4 comprises a first pivoting end 41 and a second pivoting end 42 located at both sides of the length thereof, the sliding bracket 2 is provided with a rotating adjusting disc 3 corresponding to the first pivoting end 41, the second pivoting end 42 is relatively rotatable with the angle adjusting disc 5, the first pivoting end 41 is relatively rotatable with the rotating adjusting disc 3 and is pressed together through the first locking assembly 6, and the second pivoting end 42 is pressed together with the angle adjusting disc 5 through the second locking assembly 7.

[0045] In the specific implementation process, as shown in Figure 2 The connecting bracket 1 is connected to the hat body 8 through the plug-in buckle 11 thereon and the plug-in groove 81 on the hat body 8, the connecting bracket 1 is provided with a guide groove 12, the sliding bracket 2 is slidably connected to the guide groove 12 through the clamping seat 21 thereon, and the clamping seat 21 is provided with a locking assembly 22 corresponding to the guide groove 12, the rotating arm 4 comprises a first pivoting end 41 and a second pivoting end 42 located at both sides of the length thereof, the sliding bracket 2 is provided with a rotating adjusting disc 3 corresponding to the first pivoting end 41, the second pivoting end 42 is relatively rotatable with the angle adjusting disc 5, the first pivoting end 41 is relatively rotatable with the rotating adjusting disc 3 and is pressed together through the first locking assembly 6, and the second pivoting end 42 is pressed together with the angle adjusting disc 5 through the second locking assembly 7. Figure 10The sliding bracket 2 allows the mask 9 to be adjusted forward and backward according to the head size and wearing habits of different personnel, improving the wearing comfort; the first pivot end 41 allows the mask 9 to be flipped to the top of the cap 8, facilitating the worker to quickly stow the mask 9 when it is not needed, improving the flexibility of operation, such as Figure 11 The design of the second pivot end 42 realizes the angle adjustment of the mask 9, meeting the needs of different operation scenarios for the wearing angle of the mask 9, and improving the protection effect of the mask 9.

[0046] In summary, the adapter device proposed in the present application realizes the flexible connection and multi-dimensional adjustment of the mask 9 and the safety helmet through the transmission cooperation between the connecting bracket 1, the sliding bracket 2 and the rotating arm 4; not only solves the problem of incompatibility between the traditional mask 9 and the safety helmet, but also improves the wearing comfort and stability of the mask 9, and facilitates the disassembly and assembly of the mask 9.

[0047] In the present embodiment, as shown in Figures 3 to 5 The first locking assembly 6 includes a first knob 61 and a first nut 62 that are screwed together, and the first knob 61 and the first nut 62 are respectively pressed and limited from both sides of the first pivot end 41 and the rotating adjustment disc 3, and a gasket 63 is arranged between the first nut 62 and the rotating adjustment disc 3; the second locking assembly 7 includes a second knob 71 and a second nut 72 that are screwed together, and the second knob 71 and the second nut 72 are respectively pressed and limited from both sides of the second pivot end 42 and the angle adjustment disc 5.

[0048] Further, a first threaded rod 611 is arranged on the first knob 61, and a first threaded sleeve 621 is arranged on the first nut 62, and the first threaded rod 611 is screwed with the first threaded sleeve 621; a second threaded rod 711 is arranged on the second knob 71, and a second threaded sleeve 721 is arranged on the second nut 72, and the second threaded rod 711 is screwed with the second threaded sleeve 721.

[0049] The first locking assembly 6 and the second locking assembly 7 are respectively used to stably connect the first pivot end 41 and the rotating adjustment disc 3, and the second pivot end 42 and the angle adjustment disc 5, and the locking assembly not only ensures the stability of the mask 9 during operation, but also facilitates the disassembly and assembly of the mask 9.

[0050] Specifically, when it is needed to fix the position of the first pivot end 41 and the rotating adjustment disc 3, the first knob 61 is screwed to make the first threaded rod 611 and the first threaded sleeve 621 tightly screwed, so as to realize the fixed connection between the rotating arm 4 and the sliding support 2, and the first nut 62 transmits the pressure to the rotating adjustment disc 3 through the gasket 63 during the screwing process, so as to press and limit the first pivot end 41 and the rotating adjustment disc 3. When it is needed to upturn or downturn the whole face shield 9 relative to the cap 8, the pressure of the first pivot end 41 and the rotating adjustment disc 3 is slightly released by unscrewing the first knob 61, so as to realize the upturning or downturn adjustment of the whole face shield 9.

[0051] Further, when it is needed to fix the position of the second pivot end 42 and the angle adjustment disc 5, the second knob 71 is screwed to make the second threaded rod 711 and the second threaded sleeve 721 tightly screwed, and the second nut 72 transmits the pressure to the angle adjustment disc 5 during the screwing process, so as to press and limit the second pivot end 42 and the angle adjustment disc 5. When it is needed to adjust the angle of the face shield 9, the second locking assembly 7 is only needed to be loosened, the angle adjustment disc 5 is rotated to the required angle, and then the locking assembly is screwed, so as to be simple and convenient.

[0052] In the embodiment, as shown in Figure 4 and Figure 5 , the first pivot end 41 and the rotating adjustment disc 3 are sleeved on the first threaded sleeve 621, and the second pivot end 42 and the angle adjustment disc 5 are sleeved on the second threaded sleeve 721; the rotating adjustment disc 3 is rotationally connected with the first threaded sleeve 621, the first pivot end 41 rotates synchronously with the first threaded sleeve 621, the second pivot end 42 is rotationally connected with the second threaded sleeve 721, and the angle adjustment disc 5 rotates synchronously with the second threaded sleeve 721; a limiting hole 91 is formed on the face shield 9 corresponding to the second threaded sleeve 721, a clamping hole 911 is formed on the edge of the limiting hole 91, and a protrusion 722 is arranged on the second nut 72 corresponding to the clamping hole 911.

[0053] The first pivot end 41 is driven to rotate relative to the rotating adjustment disc 3 on the sliding support 2 by the rotating arm 4, when the rotating arm 4 is subjected to external force (such as manual operation), it will drive the first pivot end 41 to rotate, and the rotation of the first pivot end 41 will be converted into the whole overturning action of the face shield 9; as shown in Figure 6 and Figure 7 , a limiting hole 91 is formed on the face shield 9 corresponding to the second threaded sleeve 721, a clamping hole 911 is formed on the edge of the limiting hole 91, which cooperates with the protrusion 722 on the second nut 72, when the protrusion 722 and the clamping hole 911 are clamped, the coaxial rotation of the face shield 9 and the second locking assembly 7 is realized, and the second locking assembly 7 and the angle adjustment disc 5 are coaxially rotated, so as to realize the function of driving the face shield 9 to adjust the angle by the angle adjustment disc 5.

[0054] As a preferred embodiment of the above-mentioned embodiment, a limiting groove 31 and a first corrugated tooth 32 are respectively arranged on the rotation adjusting disc 3 along its circumference, and a guide rod 411 and a second corrugated tooth 412 are respectively arranged on the first pivot end 41 corresponding to the limiting groove 31 and the first corrugated tooth 32; the guide rod 411 is inserted into the limiting groove 31 and is in sliding connection with the limiting groove 31, and the first corrugated tooth 32 and the second corrugated tooth 412 abut against each other and can slide relative to each other.

[0055] A protruding part 311 is arranged in the limiting groove 31 near one end of the limiting groove 31, and the protruding part 311 is formed with a locking groove 312 in cooperation with the end of the limiting groove 31, and the guide rod 411 can be engaged with the locking groove 312. The limiting groove 31 and the first corrugated tooth 32 are arranged in two semicircular arc regions of the rotation adjusting disc 3.

[0056] The rotation angle of the first pivot end 41 is limited by the limiting groove 31, and the first corrugated tooth 32 and the second corrugated tooth 412 abut against each other and can emit a friction sound during the adjustment process, thereby providing intuitive feedback for the operator. After the guide rod 411 is engaged with the locking groove 312, the relative movement between the rotation adjusting disc 3 and the first pivot end 41 will be limited, thereby achieving a locking effect.

[0057] In the present embodiment, as shown in Figure 4 and Figure 5 A scale plate 51 is arranged at the circumferential edge of the angle adjusting disc 5, a positioning click 52 is arranged on the angle adjusting disc 5 corresponding to the scale plate 51 along the circumference of the angle adjusting disc 5, and an adjusting click 421 is arranged on the second pivot end 42 corresponding to the positioning click 52, and the adjusting click 421 is engaged with the positioning click 52.

[0058] Further, a clamping block 531 is arranged on the inner wall of the through hole 53 of the angle adjusting disc 5, and a clamping groove 723 is arranged on the outer wall of the second threaded sleeve 721 along the axial direction, and the angle adjusting disc 5 is in sliding connection with the clamping groove 723 through the clamping block 531.

[0059] The scale plate 51 provides an intuitive angle reference for the operator, and when the adjusting click 421 is engaged with the positioning click 52, the relative position between the angle adjusting disc 5 and the second pivot end 42 is fixed, thereby ensuring the stability of the mask 9 after the angle adjustment. When the angle of the mask 9 needs to be adjusted, the operator first loosens the second knob 71 to release the compression state, so that the engagement state between the adjusting click 421 and the positioning click 52 is released, and at this time the angle adjusting disc 5 can rotate relative to the second pivot end 42, and the operator can adjust the wearing angle of the mask 9 by rotating the angle adjusting disc 5. After adjusting the angle of the mask 9, the operator can tighten the second knob 71 to compress the adjusting click 421 and the positioning click 52 again, so that they are engaged again, thereby fixing the new angle of the mask 9.

[0060] In the present embodiment, as shown inFigure 8 and Figure 9 As shown in the figure, the locking assembly 22 comprises a lock catch 221 and a spring 222, a plurality of positioning grooves 121 are arranged along the length direction of the guide groove 12, and a positioning block 221b is arranged on the lock catch 221 corresponding to the positioning grooves 121; the spring 222 is arranged between the clamping seat 21 and the lock catch 221, and drives the positioning block 221b to be clamped with the positioning grooves 121, and a pressing part 221a is arranged on the lock catch 221 corresponding to the spring 222.

[0061] The sliding support 2 is clamped with the positioning grooves 121 in the guide groove 12 through the lock catch 221, and the lock catch 221 specifically cooperates with the positioning grooves 121 in the guide groove 12 through the positioning block 221b thereon, so as to realize the locking function between the sliding support 2 and the connecting support 1. The spring 222 provides continuous elastic force for the lock catch 221, drives the positioning block 221b to be tightly clamped with the positioning grooves 121, and ensures the reliability of the locking.

[0062] The pressing part 221a is arranged on the lock catch 221 corresponding to the spring 222, and an operator can release the locking by pressing the pressing part 221a. Pressing the pressing part 221a will make the lock catch 221 overcome the elastic force of the spring 222, so that the positioning block 221b is separated from the positioning grooves 121, thereby releasing the locking state. When the positioning block 221b is aligned with a certain positioning groove 121, the elastic force of the spring 222 will push the positioning block 221b into the positioning groove 121, so as to realize the locking.

[0063] It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model. These changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hard hat face shield adapter disposed between a face shield and a hard hat, comprising: The connecting bracket is connected with the cap body, and the sliding bracket is connected with the mask through the rotating arm; The connecting bracket is connected with the cap body through the inserting buckle thereon, and the guide slot is arranged on the connecting bracket, the sliding bracket is connected with the guide slot through the clamping seat thereon, and the locking assembly is arranged on the clamping seat corresponding to the guide slot; The rotating arm comprises a first pivoting end and a second pivoting end located at two sides of the length thereof, the rotating adjusting disc is arranged on the sliding bracket corresponding to the first pivoting end, the second pivoting end rotates relative to the angle adjusting disc, the first pivoting end rotates relative to the rotating adjusting disc and is pressed and combined through the first locking assembly, and the second pivoting end is pressed and combined with the angle adjusting disc through the second locking assembly.

2. The hard hat face shield adapter of claim 1, wherein, The first locking assembly comprises a first knob and a first nut which are screwed with each other, the first knob and the first nut press and limit the first pivoting end and the rotating adjusting disc from two sides thereof respectively, and the gasket is arranged between the first nut and the rotating adjusting disc; The second locking assembly comprises a second knob and a second nut which are screwed with each other, the second knob and the second nut press and limit the second pivoting end and the angle adjusting disc from two sides thereof respectively.

3. The hard hat face shield adapter of claim 2, wherein, A first threaded rod is arranged on the first knob, and a first threaded sleeve is arranged on the first nut, and the first threaded rod is screwed with the first threaded sleeve; A second threaded rod is arranged on the second knob, and a second threaded sleeve is arranged on the second nut, and the second threaded rod is screwed with the second threaded sleeve.

4. The hard hat face shield adapter of claim 3, wherein, The first pivoting end and the rotating adjusting disc are sleeved on the first threaded sleeve, and the second pivoting end and the angle adjusting disc are sleeved on the second threaded sleeve; The rotating adjusting disc is rotationally connected with the first threaded sleeve, the first pivoting end rotates synchronously with the first threaded sleeve, the second pivoting end is rotationally connected with the second threaded sleeve, and the angle adjusting disc rotates synchronously with the second threaded sleeve; A limiting hole is formed in the mask corresponding to the second threaded sleeve, a clamping opening is formed at the edge of the limiting hole, and a protruding block is arranged on the second nut corresponding to the clamping opening.

5. The hard hat face shield adapter of claim 4, wherein, A limiting slot and a first corrugated tooth are arranged on the rotating adjusting disc along the circumferential direction thereof respectively, and a guide rod and a second corrugated tooth are arranged on the first pivoting end corresponding to the limiting slot and the first corrugated tooth respectively; The guide rod is inserted into the limiting slot and is slidably connected with the limiting slot, and the first corrugated tooth and the second corrugated tooth abut against each other and can slide relative to each other.

6. The hard hat face shield adapter of claim 5, wherein, A protruding portion is arranged in the limiting slot close to one end of the length thereof, the protruding portion cooperates with the end of the limiting slot to form a locking slot, and the guide rod can be clamped with the locking slot.

7. The hard hat face shield adapter of claim 5, wherein, The limiting slot and the first corrugated tooth are arranged in two semicircular regions of the rotating adjusting disc.

8. The hard hat face shield adapter of claim 4, wherein, A scale plate is arranged at the circumferential edge of the angle adjusting disc, and a positioning click is arranged at the circumferential edge of the angle adjusting disc corresponding to the scale plate, and an adjusting click is arranged at the second pivot end corresponding to the positioning click, and the adjusting click is engaged with the positioning click.

9. The hard hat face shield adapter of claim 8, wherein, A clamping block is arranged on the inner wall of the through hole of the angle adjusting disc, and a clamping groove is arranged on the outer wall of the second threaded sleeve along the axial direction, and the angle adjusting disc is slidably connected with the clamping groove through the clamping block.

10. The hard hat face shield adapter of claim 1, wherein, The locking assembly comprises a lock and a spring, and a plurality of positioning grooves are arranged in the guide groove along the length direction, and a positioning block is arranged on the lock corresponding to the positioning grooves. The spring is arranged between the clamping seat and the lock, and drives the positioning block to be engaged with the positioning groove, and a pressing part is arranged on the lock corresponding to the spring.

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